Day 4

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Paper title A sequential aerosol – CO2 retrieval approach for the CO2M mission
Authors
  1. Antonio Di Noia University of Leicester Speaker
  2. Pavel Litvinov GRASP SAS
  3. Hartmut Boesch University of Leicester
  4. Oleg Dubovik Laboratoire d’Optique Atmosphérique, CNRS / Université de Lille, France
  5. Cheng Chen GRASP SAS
  6. David Fuertes GRASP SAS
  7. Tatyana Lapyonok Laboratoire d’Optique Atmosphérique, CNRS – University of Lille
  8. Anton Lopatin GRASP-SAS
  9. Christian Matar GRASP-SAS
  10. Yasjka Meijer ESA - European Space Agency
Form of presentation Poster
Topics
  • A5. Climate
    • A5.05 Monitoring Anthropogenic Greenhouse Gas Emissions from Space
Abstract text The Copernicus Anthropogenic Carbon Dioxide Monitoring (CO2M) mission is the first operational space-base system aimed at collecting data in support of systems for global monitoring and verification of CO2 emissions. This will require sampling major emission areas (including plumes from point sources and cities) with high coverage and sufficiently high accuracy including regions with enhanced aerosol loadings.

CO2M has been designed to meet these objectives by carrying an imaging spectrometer for CO2 measurements (CO2I) together with a multi-angle polarimeter (MAP) for co-located aerosol information. The underlying assumption is that the MAP instrument can provide a detailed aerosol characterization for the CO2 retrieval and thus allows to reduce critical aerosol-related uncertainties.

Making use of aerosol information from the MAP instrument will require to develop new approaches for the CO2 retrieval. We have developed a sequential approach where first aerosol properties are retrieved from the MAP measurements which are then used as input for the CO2 retrieval from the CO2I observations. This new retrieval brings together the Generalized Retrieval Aerosol and Surface Properties (GRASP) for the MAP retrieval with the University of Leicester (UoL) full-physics retrieval for the CO2 retrieval.

In this presentation, we will give a description of the sequential MAP-CO2 retrieval for CO2M and present a characterisation of the retrieval approach based on global simulations of realistic atmospheric scenarios. The presentation will conclude with an outlook towards further development needs.